Precision Seamless Alloy Steel Pipes, specifically grades 40CrMo, 42CrMo, and 42CrMo4:
Product Description: Precision Seamless Alloy Steel Pipes, available in grades 40CrMo, 42CrMo, and 42CrMo4, are engineered for high-strength and high-precision applications. These pipes are made from alloy steel that has been heat-treated to achieve a balance of hardness, ductility, and tensile strength. The seamless construction ensures uniformity and reliability, making these pipes suitable for critical applications where performance and safety are paramount.
Product Parameter Specifications:
Parameter | Specification | Units |
Standard | EN 10297-1, DIN 2391, ASTM A519, GB/T 3639 | - |
Grade | 40CrMo, 42CrMo, 42CrMo4 | - |
Outer Diameter | Ranges from 6mm to 300mm depending on the specific application | mm |
Wall Thickness | Varies with diameter; specific range per product specification | mm |
Length | Typically 3m to 12m, customizable based on requirements | m |
Tolerance | Close tolerances on diameter, wall thickness, and length | - |
Product Applications:
- Automotive Industry: Used in the manufacturing of precision automotive components such as gears, shafts, and bearings.
- Aerospace Sector: Suitable for the production of aircraft parts where high strength and precision are required.
- Machinery and Equipment: Ideal for high-precision machinery parts and equipment that demand durability and reliability.
- Oil and Gas Industry: Employed in the production of drill pipes and other components that operate under high pressure and stress.
- Instrumentation: Utilized in the construction of precision instruments and control systems.
Types of Precision Seamless Alloy Steel Pipes:
- 40CrMo: A high-strength alloy steel with good hardenability, suitable for applications requiring high tensile and yield strength.
- 42CrMo: Offers improved toughness and wear resistance compared to 40CrMo, making it ideal for more demanding applications.
- 42CrMo4: A high-grade alloy steel with enhanced mechanical properties, often used in high-performance components.
Mechanical Properties:
Property | Typical Range/Value for Grades | Units |
Tensile Strength | 980-1180 MPa (40CrMo) | MPa |
| 1100-1300 MPa (42CrMo) | MPa |
| 1100-1300 MPa (42CrMo4) | MPa |
Yield Strength | ≥ 835 MPa (40CrMo) | MPa |
| ≥ 930 MPa (42CrMo) | MPa |
| ≥ 930 MPa (42CrMo4) | MPa |
Elongation | ≥ 10% (for all grades) | % |
Chemical Composition:
Element | Typical Range (%) for Grades |
Carbon (C) | 0.37-0.44 (40CrMo) |
| 0.38-0.45 (42CrMo) |
| 0.38-0.45 (42CrMo4) |
Manganese (Mn) | 0.50-0.80 (all grades) |
Silicon (Si) | ≤ 0.40 (all grades) |
Phosphorus (P) | ≤ 0.035 (all grades) |
Sulfur (S) | ≤ 0.035 (all grades) |


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